[RAILS] What to do if you get angry with "ERROR: There are no scenarios; must have at least one" even though you should have entered yarn in Docker

background

I should have put yarn in Docker, but when I hit the command below, I got angry

Contents of Dockerfile

FROM ruby:2.5
RUN apt-get update && apt-get install -y \
    build-essential \
    libpq-dev \
    nodejs \
    postgresql-client \
    yarn
WORKDIR /kosare
COPY Gemfile Gemfile.lock /kosare/
RUN bundle install

Error occurred in yarn command

root@5847e387581e:/kosare# yarn -v
ERROR: There are no scenarios; must have at least one.

Solution (temporary solution)

Basically, if you do the same as the URL described in the reference, it will be solved. In my case, it was already entered as root, so I removed the part that says sudo and executed it in order to solve it.

Delete old yarn

sudo apt remove cmdtest
sudo apt remove yarn

Get the latest

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -

Get the latest

echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

update

apt-get update 

re-install

apt-get install yarn

Version confirmation

yarn -v

Solution (fundamental solution)

With the above method, the same thing happens again when bundle install is done again with docker. I want to solve it when building with Dockerfile, so add the following two lines to dockerfile.

RUN curl https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

Dockerfile (final form)

FROM ruby:2.5
RUN curl https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
RUN apt-get update && apt-get install -y \
    build-essential \
    libpq-dev \
    nodejs \
    postgresql-client \
    yarn
WORKDIR /kosare
COPY Gemfile Gemfile.lock /kosare/
RUN bundle install

If you rebuild it with this, yarn should be usable properly.

reference

https://k-koh.hatenablog.com/entry/2020/04/02/143017 https://github.com/yarnpkg/yarn/issues/7329 https://qiita.com/MasatoraAtarashi/items/3f0317cd648ff63fa92c